package com.us.simple.common.advice;

import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 统一返回类包装器
 *
 * @Author: wangziqian
 * @Date: 2024-05-15
 */
//集成 knife4j 需要注释此
//@RestControllerAdvice
public class RestBodyAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {

        if (o == null) {
            return RestBody.ok();
        }
        if (Rest.class.isAssignableFrom(o.getClass())) {
            return o;
        }
        return RestBody.okData(o);
    }
}
